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ole32: Check that the specified clipboard format and tymed are valid in IOleCache::Cache in the data cache.

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This commit is contained in:
Rob Shearman 2006-12-02 18:16:47 +00:00 committed by Alexandre Julliard
parent d9d6732170
commit d37b669503
1 changed files with 29 additions and 1 deletions
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30
dlls/ole32/datacache.c
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@ -249,8 +249,36 @@ static DataCacheEntry *DataCache_GetEntryForFormatEtc(DataCache *This, const FOR
return NULL; return NULL;
} }
/* checks that the clipformat and tymed are valid and returns an error if they
* aren't and CACHE_S_NOTSUPPORTED if they are valid, but can't be rendered by
* DataCache_Draw */
static HRESULT check_valid_clipformat_and_tymed(CLIPFORMAT cfFormat, DWORD tymed)
{
if (!cfFormat || !tymed ||
(cfFormat == CF_METAFILEPICT && tymed == TYMED_MFPICT) ||
(cfFormat == CF_BITMAP && tymed == TYMED_GDI) ||
(cfFormat == CF_DIB && tymed == TYMED_HGLOBAL) ||
(cfFormat == CF_ENHMETAFILE && tymed == TYMED_ENHMF))
return S_OK;
else if (tymed == TYMED_HGLOBAL)
return CACHE_S_FORMATETC_NOTSUPPORTED;
else
{
WARN("invalid clipformat/tymed combination: %d/%d\n", cfFormat, tymed);
return DV_E_TYMED;
}
}
static HRESULT DataCache_CreateEntry(DataCache *This, const FORMATETC *formatetc, DataCacheEntry **cache_entry) static HRESULT DataCache_CreateEntry(DataCache *This, const FORMATETC *formatetc, DataCacheEntry **cache_entry)
{ {
HRESULT hr;
hr = check_valid_clipformat_and_tymed(formatetc->cfFormat, formatetc->tymed);
if (FAILED(hr))
return hr;
if (hr == CACHE_S_FORMATETC_NOTSUPPORTED)
TRACE("creating unsupported format %d\n", formatetc->cfFormat);
*cache_entry = HeapAlloc(GetProcessHeap(), 0, sizeof(**cache_entry)); *cache_entry = HeapAlloc(GetProcessHeap(), 0, sizeof(**cache_entry));
if (!*cache_entry) if (!*cache_entry)
return E_OUTOFMEMORY; return E_OUTOFMEMORY;
@ -268,7 +296,7 @@ static HRESULT DataCache_CreateEntry(DataCache *This, const FORMATETC *formatetc
(*cache_entry)->dirty = TRUE; (*cache_entry)->dirty = TRUE;
(*cache_entry)->stream_number = -1; (*cache_entry)->stream_number = -1;
list_add_tail(&This->cache_list, &(*cache_entry)->entry); list_add_tail(&This->cache_list, &(*cache_entry)->entry);
return S_OK; return hr;
} }
/************************************************************************ /************************************************************************